#!/usr/bin/env python
import time
import os
import thread, itertools
from nanpy import Arduino
from nanpy import (OneWire, Lcd)
from subprocess import *

# configure pins for Hobbytronics LCD shield
Arduino.pinMode(0, input)
lcd = Lcd([8, 9, 4, 5, 6, 7], [16, 2])

# threaded function to show time twice a minute
def showTime():
   while True:
       if pause == 0:
         now = time.localtime(time.time())
         lcd.printString(time.strftime("%H:%M   %d/%m/%y", now), 0, 1)
         time.sleep(30)

def run_cmd(cmd): 
   p = Popen(cmd, shell=True, stdout=PIPE, stderr=STDOUT) 
   output = p.communicate()[0] 
   return output

lcd.printString("MyLittleRadio1.4", 0, 0)
lcd.printString("by @blogmywiki  ", 0, 1)
time.sleep(5)

def display_ipaddr(): 
   show_wlan0 = "ip addr show wlan0 | cut -d/ -f1 | awk '/inet/ {printf \"w%15.15s\", $2}'" 
   show_eth0  = "ip addr show eth0  | cut -d/ -f1 | awk '/inet/ {printf \"e%15.15s\", $2}'" 
   ipaddr = run_cmd(show_eth0) 
   if ipaddr == "": 
      ipaddr = run_cmd(show_wlan0) 
   lcd.printString('IP Address:     ',0,0)
   lcd.printString(ipaddr,0,1)
   time.sleep(2)

def getKey():                             
   val = Arduino.analogRead(0)
   if val == 1023:
      return "NONE"
   elif val < 100:
      return "RIGHT"
   elif val < 200:
      return "UP"
   elif val < 400:
      return "DOWN"
   elif val < 600:
      return "LEFT"
   elif val < 800:
      return "SEL"
   else:
      return "KBD_FAULT"


def getTrack():
  L= [S.strip('\n') for S in os.popen('mpc').readlines()]    # Get the Track info from the stdout of the mpc command
  sttn = L[0][0:16]                                                         # Pick out the Station and Track info
  lcd.printString(16*" ", 0, 0)                                            # Send it out to the LCD Display
  lcd.printString(sttn, 0, 0)
  print L
  print sttn

station = 10    # play station 10 fip by default
os.system("mpc play " + str(station))
# trying a different way to display initial station
L = [S.strip('\n') for S in os.popen('mpc current').readlines()] 
if L == "":
   L = "audio not found"
lcd.printString(" "*16, 0, 0)
lcd.printString(L, 0, 0)
print L
# getTrack()
global pause
pause = 0

# start a new thread for displaying time
thread.start_new_thread(showTime, ())

while True:
  #take a reading
  key=getKey()
  if key == "UP":
    if pause == 0:
      station += 1
      if station > 11:
         station = 1
      print(str(station))
      os.system("mpc play " + str(station))
      getTrack()
  elif key == "DOWN":
    if pause == 0:
      station -=1
      if station < 1:
         station = 11
      print(str(station))
      os.system("mpc play " + str(station))
      getTrack()
  elif key =="LEFT":
    if pause == 1:
      display_ipaddr()
    elif pause == 0:
      os.system("mpc volume -3")
  elif key =="RIGHT":
    os.system("mpc volume +3")
  elif key == "SEL":
    if pause == 0:
      pause = 1
    elif pause == 1:
      pause = 0
    os.system("mpc toggle")
    if pause == 1:    
      lcd.printString("      PAUSE     ", 0, 1)
    elif pause == 0:
      noo = time.localtime(time.time())
      lcd.printString(time.strftime("%H:%M   %d/%m/%y", noo), 0, 1)
      getTrack()

# added for key press debounce
  time.sleep(0.1)